But eventually, twitter will probably ask you to phone verify. I always recommend (if purchasing) go with phone verified accounts, yes they cost more, but in a few months time if the accounts are profitable and you get hit with a phone verification message, you will feel a bit silly for not spending the extra cents on PVA accounts

Sorry for my ignorance but what are ova accounts & what does PVA stand for? Most importantly how do I spend money on it? When you say 'profitable' do you mean as in money or just followers and engagements?

Then lets say in 1 month time, your 10 accounts are now profitable (earning you money / or giving you value due to engagement). Twitter than demands you phone verify your 10: $5 accounts and you cannot and you lose them. For the sake of saving $5 a month ago, you have now lost 10 accounts that were a lot more valuable to you (in some way) than $5. i.e. you save $5 today, but lose $100 in 4 weeks.